Gas-producer.



G. WHITFIELD.

GAS PRODUCER.

APPLIOATION FILED FEB-3,1914.

l ggg m Patented May 12, 1914.

3 SHEET RESET 1.

G. WHITFIELD.

GM PRODUCER m APPLIOATIONIILED 1183,1914, LOQSJYWL Patented May 12,1914.

{3 BHEETS-SHBBT 2.

Patented May 12, 1914.

a SHEETS-SHEET 3.

G. WHITFIELD.

GAS PRODUCER.

APPLICATION FILED FEB. s. 1914.

' %L& p0 t g ?//66 WWW 9 M i d CHARLES WHITFIELD, 0F SYDENHAM, LONDON,ENGLAND.

GAS-PRODUCER.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed February 3, 1914. Serial No. 816,163.

To all whom it may com-cm Be it known that I, CHARLES WHITFIELD, asubject of the King of Great Britain and Ireland, and resident ofSydenham, London, England, have invented certain new and usefulImprovements in GasProdueers, of which the following is a specification.

This invention refers to gas producers for use in the making of producergas and it relates in particular to producers of the type designed todeal with light fuels, a. fuels, the non-gaseous and dust-like productsof which are liable to pass with the gas and choke the passages leadingto the point where the gas is required. This is especially so in thecase of light fuels of a bituminous or tarry nature, and where theproducer is worked by the suction stroke of an engine. Attempts toovercome this objection have been made, chiefly consisting in washingout the dust after the gas leaves the producer. By this invention thedust is removed before the gas leaves the producer, or, in other words,the dust is left in the producer.

A further feature of the invention is the treatment of the gas in aspecial construction of centrifugal fan which while removing any dust ortar (if any) remaining in the gas produces a steady and gentle suctionon the producer and modifies the irregular and intermittent enginesuction.

Upon the accompanying drawings, Figure 1 illustrates a sectionalelevation of a gas producer plant embodying the invention. Fig. 2illustrates a sectional plan of the producer part only. Fig. 3illustrates an enlarged vertical section of an important detail part.Fig. 4 illustrates a sectional plan on line m-.10 of Fig. 3. Fig. 5illustrates a sectional elevation of the tar extractor.

As shown, the producer is of ordinary construction generally, but thegas outlet a, which is preferablystraight-sided, is much wider in planat the end nearest the interior of the producer than at the end farthestfrom such interior. To the metal part a of the gas outlet is connectedthe junction box I) provided with cleaning and inspection doors, andfrom this box depends a short pipe 0. Connected to this pipe at itslower end, by a tapered connected pipe (1, is a pipe 6, this pipe beinglarger in diameter than the pipe 0. Supported by a flange or ledge inthe lower end of the pipe 0, see Fig. 3 1s a conical nozzle f, the lowerpart of tlns nozzle extending into the tapered connecting pipe (I.Fitted tangentially to the pipe c, near its upper end, is a water supplyp1 pe 9. By means of this pipe water delivered therefrom, flows in aspiral path around the inner face of the pipe 0, thereby keeping thesame constantly washed and free from tar and dust. The lower and openend of the pipe e dips into a settling tank It. Near its lower end thepipe e is connected by branch pipe h to a further pipe 2', which at itslower and open end dips into the tank h. At its upper end the pipe 6communicates with pipe j, which latter and also through the tank t andextractor o communicates with the engine.

The contraction of the passage for the gas by the nozzle f constitutesthe chief feature of the invention, for by such contraction the actionof the engine during each suction stroke is prevented drawing over thedust from the producer, the proportions of the outlet a and that of thenozzle f being such that the suction of the engine has no appreciableeffect on the bulk of the gas within the producer and thus allows thedust to remain in a quiescent state, or nearly so, within the producer.The accumulated dust will be removed in the ordinary course of stoking.The nozzle 7' may be substituted for nozzles of-different degree oftaper, according to requirements.

By reason of the pipe e being wider than the pipe 0, the gas and waterpass strai ht down from the nozzle and there is thus ittle chance of anytar adhering to the pipe e. Within the pipe 11 is an open spirallyarranged channel It' supported by a central spindle Z resting on a crossbar m. Into this channel flows water admitted through a pipe a. Afterleaving the pipe 0 via branch h the gas flows upward through the pipe 71and, on its way to the pipe 2', comes in contact with the water, and isthereby cooled and relieved of some of the tar, etc. The pipe 2' hasopenings covered by removable doors down one side to facilitate accessto the channel.

The extractor, shown to a larger scale in Fig. 5, consists of a circularbox-like casing 0 having a circumferential channel 0 similar to that ofa centrifugal pump. Within the casing is a fan 9 composed of a centraldisk 9 and a series of sheet metal vanes g? on each side of the disk,which vanes radiate from the center to the periphery of the disk. Oneach side of the fan and at the outer ends of the vanes is a sheet metalring Q3, each ring, in conjunction with the disk and vanes, forming aseries of pas sages which come opposite the circumferential channel 0 inthe fan casing. Upon one side of the fan is a further but smaller diskand further vanes g these latter and the disk constituting a separatefan or propeller, and being on the outlet side of the larger fan. At itslower partthe fan casing is dividedby a vertical partition 0" into twopassages 8', .9 one formin the inlet and the other the outlet to the fancasing.

On the fan being set in motion, the gas is first drawn through the inletpassages 8'' into the fan casing 0, then passed into con.- tact with thevanes 0 on one side of the large fan, which fling it outward, andthrough the passages at the edge of the fan into the circumferentialchannel. On the gas reaching the outer edge of the disk 9' it isthendrawn by the smaller fan through the passages on the other side of thedisk and finally delivered through the outlet passage 8 Any tar in thegas is received by the channel 0 from whence it escapes into thetangential outlet passageo leading to a suitable receiver. During thepassage of the gas through the extractor jets of water may be deliveredon to the fan on both sides, the water passing along with the gas andhelping to remove the tar.

The extractor will usually be fitted to a settling'tank '25 divided intotwo compartments, see Fig. 1, the gas inlet being in one and the outletbeing in the other compartment. 1

What I claim is: 1. In combination, a gas producer having an outlet thesides of which are tangential to the inner face of the producer andconverge in plan, a pipe for conveying the gas from the producer outlet,a junction box into which the said outlet pipe opens, a further pipedepending from the said junction box, a conical nozzle, with its narrowend farthest from the said junction box within said pipe, means fordelivering a constant stream of water to the inner face of the nozzle, afurther pipe to which the said outlet pipe is connected near its lowerend, and means for delivering water in a helical path through suchfurther pipe, and a rotaryfan coupled to the said further pipe fordrawing the gas through the said pipes and junction box, as set forth.

2. Incombination, a gas producer having an outlet the sides of which aretangential to the inner face of the producer and converge in plan, apipe for conveying the'gas from the producer outlet to an engine, saidpipe being of larger diameter at one part than another, and a conicalnozzle at the junction of the two parts, and said point of junctionbeing in a vertical part of the pipe and the nozzle pointing downward,as set forth.

in witness whereof l have hereunto set my hand in the presence of twowitnesses.

CHAS. WHITFIELD.

Copies of this patent may be obtained for five cents each, byaddressing}; the Commissioner of Patents,

Washington, D. 1

